BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Functions

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 315
Joined: Thu Aug 17, 2006 10:43 pm
Thanked: 23 times

by Suyog » Sun Oct 14, 2007 6:50 pm
1) a < b

let a = 2 and b = 3
f(a) = 2-4 = -2
f(b) = 3-9 = -6
Therefore f(a) > f(b)

let a = -2 and b = 3
f(a) = -2(4) = -8
f(b) = 3-9 = -6
Therefore f(a) < f(b)
INSUFF

2) a^2< b^2
We can always take a positive root of a and negative root of b and vice-versa, so 2 will never be SUFF

Both statements together also dont make any difference.

Ans E.
Top
Post new topic Post Reply
• Page 1 of 1